@ARTICLE{Divani Khafaei, author = {Divani Khafaei, Sahar and Ghasemi, Mohsen and Soleimanian, Vishtasb and }, title = {The effect of weight ratios of Conjugated Polymers in the active layer of the bulk heterojunction photovoltaic cell}, volume = {24}, number = {0}, abstract ={In this paper, bulk heterojunction polymer photovoltaic cells with structure of ITO/MoO3/P3HT: PCBM /BCP/LiF/Al were fabricated in different weight ratios of P3HT: PCBM. In order to investigate the effect of changing the weight ratios of these materials in the active layer; polymeric cells with active layer of P3HT:PCBM were prepared in four weights ratio of 1:1, 1:1.5, 1:0.8 and 1:0.6. The photovoltaic parameters of the cells, such as short circuit current, open circuit voltage, fill factor and power conversion efficiency, were also determined and analyzed. The results show that the cell with a 1:1 weight ratio has better performance. Finally, by using the voltage-current curve, the transport mechanisms of charge carriers in optimized cell was determined. }, URL = {http://opsi.ir/article-1-1605-en.html}, eprint = {http://opsi.ir/article-1-1605-en.pdf}, journal = {Accepted and Presented Articles of OPSI Conferences}, doi = {}, year = {2018} }